Share-Based Compensation (Component of Net Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 25, 2013	Dec. 26, 2012	Dec. 28, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	$ 4,852	$ 3,496	$ 4,219
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	558	909	1,069
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	3,488	2,050	2,369
Restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	$ 806	$ 537	$ 781